Method of making containers



V File Nov. 8, l;24

June 29 192s. 1,590,749

E. F. HULBERT METHOD OF MAKING CONTAINERS Z UNIV INVENTOR.

ATTORNEYJ inner side of the Patented June 29, 1926.

UNITED STATES PATENT OFFICE.

EDWIISI F. HULBERT, OF MILWAUKEE, WISCONSIN, A SSIGNOR, BY MESNE 'ASSIGN MENTS, TO MASTER PACKAGE CORPORATION OF DELAWARE.

METHOD or MAKING CONTAINERS.

Application filed November 8, 1924. .Serial No. 748,792.

The invention relates to a method of mark ing containers.

The object of the invention is to provlde a closure for containers in which the head 6, of the container fits'within the siding and is clamped to a reinforcing band of sheet metal which is clamped with the extended end of the siding against the siding by pressure applied. to both said extended end 'and band 10 by the method hereinafter described.

' The inventionfurther consists in the sev-' eral features hereinafter set forth and more.

particularly defined clusion hereof.

In the drawings: Fig. 1 is a sectional View showing the apparatus with the container parts in position for attaching the closure; ig. 2 is a view similar to Fig. '1 showing the apparatus with the container parts in assembled relation;

Fig. 3 is a perspective view of a conical pail embodying the invention, parts being roken away and parts being shown in seeby the claim at the con tion;

Fig. 4 is a view similar to Fig. 3 showing a cylindrical container embodying the invention.

In carrying out my method, fibre tubing or siding 5, either of pressed pulp or a number of wrappings of paper or fiber sheets, and which may be of cylindrical, conical or poylgonal shape in cross-section, is placed on an anvil or head 6 shaped to lit the contour of the inner side of the container and, with the head hereinafter described in place, is clamped to said anvil by a contractible chuck 7 of any suitable construction, which grips the outside of the tubing or siding adjacentthe anvil and clamps it thereto.

A closure or head 8 of fiber, either of b pressed pulp or a number of layers of aper sheets, shaped to fit the ad acent siding, and here shown as a flat-sided cylindrical member, is carried by a metal sheathing or band 9, preferably of thin sheet steel or other suitable sheet metal.

The sheathing 9 is formed from a strip or sheet of sheet metal which is formed with a flange 10 at one edge and a crimped-in or bent portion forming another flange 11. The sheet thus formed has the head fitted within the recess formed between the flanges 10 and 11, the strip being bent around the head with its ends secured together in any suitable cavo-convex bottom 19.

manner to. form a band carrying the head,

as shown in Figs. 3 and 4 of the drawings,

where the band and head are shown in positlon in the bottom end of the body of the container. The outer edge 12 of the band is also flared outwardly, as shown in Fig. 1,

before assembly.

In attaching this head with its band the,

same is placed in position within the siding and against the anvil 6. A reciprocating plunger 13 having a head-and-band-engag ing part 14; is brought down to a position against. the head and within the band, and the chuck 7 is then moved to clamping position, as shown'in Fig. 1. The plunger 13 is also provided with an edge-forming part 15, relatively movable with respect to the part 14., working within it, by reason of springs 16 interposed between the main body part of the plunger and the part 14. For crimping the edge of the container the edge 17 of the art 15 is preferably of concave form, and the contractible chuck 7 is provided with an annular recess 18 having a con- With the part 14 engaging the head and the parts as shown in the position in Fig.- 1, the downward movement of the plunger 13 first moves the part 14 into firm engagement with the head and presses the flanges and the head portion between them and the anvil 6, thus firmly clamping the head to the band, and thereafter the part moves down and bends the portion 20 of the band with the extended edge 21 of, the siding in the form shown in Fig. 2, the chuck 7 with the parts 15 and 14 forming a die in which the siding and band are flared outwardly and crimped or rolled together against the siding y the pressure exerted by the longitudinally movable part 15. Thus the band and siding are pressed together.within a die by pressure aplied parallel to the general plane of the si ing and. band and a very tight connection between the band and siding is secured, while at the same time the band is firmly clamped to the head.

and 11 of the band While a conical container has been shown in connection with the other parts shown in Figs. 1 and 2, it will be understood that a container having straight cylindrical sidmg may be treated in a similar manner with the anvil and chuck shaped to accommodate this particular form of siding.

Figs. 3 and 4 show completed containers in which the conical pail 22, shown in Fig. 3', and the straight, cylindrical container 23,

shown inFig. 4, have the heads &secured to the bands 9 which have a portion fitting within the siding and turned outwardly with and crim ed withthe outer edge portion of said si mg to the siding.

. fication to include broadly a ring or strip;

the ring form being used on cylindrical or conical containers while the stri form may be used on containers-havin onal-shapedbodies or sides. Y

the sidln What I claim as my invention is:

The method of forming a container closure in which a head is carried between the flanges of a clamping band and fits within the siding'of the'container, which consists in positioning the head between the flanges of the band and within the siding gitudinal movement with respect to the head,

of the. container, clamping said siding against Ion! putting the flanges of said clamping band.

under pressure to clamp them to the head and withsaid siding and head so clampedi bending theouterportion of the band and adjacent thereto u on itself in a confine space into a crimpe beaded edge adjacent said head.

- In testimony whereof, I aflix my signature.

EDWIN- F. 'H ULBERT. 

